Oxygen sensor



FIG. 1 is a top perspective view of a oxygen sensor showing my new design.

FIG. 2 is a top plan view thereof on an enlarged scale.

FIG. 3 is a bottom plan view thereof on an enlarged scale.

FIG. 4 is a side elevational view thereof on an enlarged scale, the opposite side being a mirror image.

FIG. 5 is a side elevational view thereof on an enlarged scale, as rotated 90 degrees relative to FIG. 4, the opposite side being a mirror image. 

The ornamental design for oxygen sensor, as shown and described. 